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AIEEE 2004 Physics Solved Paper
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© examsnet.com
Question : 15
Total: 78
A machine gun fires a bullet of mass
40
g
with a velocity
1200
ms
−
1
. The man holding it can exert a maximum force of
144
N
on the gun. How many bullets can he fire per second at the most?
Two
Four
One
Three
Validate
Solution:
Assume the man can fire
n
bullets in one second.
∴
change in momentum per second
=
n
×
m
v
=
F
[
m
=
mass of bullet,
v
=
velocity,
F
=
force)
]
∴
n
=
F
m
v
=
144
×
1000
40
×
1200
=
3
© examsnet.com
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